Central Bureau for Astronomical Telegrams
IAUC 5464: 1992I; 1991h1
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Circular No. 5464
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
SUPERNOVA 1992I IN NGC 2565
C. Pollas, Observatoire de la Cote d'Azur, reports the discovery
by Christian Buil, on CCD frames obtained Feb. 29.93 UT with a
0.50-m reflector at Toulouse, of an apparent supernova (mag about
18) in NGC 2565 = Markarian 386. A Tech Pan exposure taken by
Pollas on Mar. 1.0 UT has a limiting magnitude similar to that of
the Palomar Sky Survey prints, which show no object at the position
of SN 1992I, measured by Pollas as R.A. = 8h16m50s.21, Decl. =
+22 11'28".5 (equinox 1950.0), or 28".5 west and 7".1 north of the
galaxy's center. A bright star near the galaxy's nucleus has end
figures 52s.68, 10".5.
COMET MUELLER (1991h1)
Ephemeris from orbital elements on MPC 19654:
1992 TT R. A. (2000) Decl. Delta r Elong. Phase m1
Feb. 28 1 43.61 + 0 38.8 0.785 0.722 46.2 82.1 8.1
Mar. 4 1 27.87 - 3 51.6 0.848 0.597 36.8 84.7 7.4
9 1 10.01 - 7 47.5 0.913 0.465 27.9 85.7 6.5
14 0 46.72 -10 53.5 0.979 0.329 19.2 83.1 5.1
19 0 12.94 -11 32.1 1.043 0.216 11.9 71.5 3.4
24 23 36.32 - 5 23.3 1.081 0.225 11.6 62.5 3.7
29 23 18.57 + 4 54.3 1.092 0.345 18.3 65.4 5.6
Apr. 3 23 12.79 +15 04.1 1.106 0.481 25.8 64.7 7.0
8 23 12.37 +24 27.6 1.132 0.612 32.6 61.9 8.1
13 23 14.82 +33 02.2 1.170 0.737 38.7 58.3 9.0
18 23 19.09 +40 49.1 1.219 0.855 43.9 54.5 9.7
23 23 24.72 +47 50.9 1.278 0.968 48.3 50.9 10.4
28 23 31.51 +54 11.2 1.345 1.076 52.0 47.6 11.0
Total visual magnitude estimates (cf. IAUC 5438): Jan. 29.26
UT, 11.0 (A. Hale, Las Cruces, NM, 0.41-m reflector); Feb. 3.07,
10.6 (J. E. Bortle, Stormville, NY, 0.32-m reflector); 6.03, 9.9
(Bortle); 21.96, 8.5 (V. F. de Assis Neto, Sao Francisco de Oliveira,
Brazil, 10x70 binoculars); 24.79, 8.3 (H. Mikuz, Ljubljana, Slovenia,
20x60 binoculars); 29.77, 7.9 (Mikuz); Mar. 1.05, 7.9 (G. W. Kronk,
Troy, IL, 0.33-m reflector).
1992 March 2 (5464) Daniel W. E. Green
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